This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A129608 #5 Mar 31 2012 13:21:14 %S A129608 0,1,2,3,4,6,5,7,8,9,11,10,16,19,14,15,12,17,18,13,20,21,22,23,25,24, %T A129608 30,33,28,29,26,44,47,27,53,56,60,37,39,38,43,52,42,40,31,45,46,32,48, %U A129608 49,50,51,41,34,54,55,35,57,58,59,36,61,62,63,64,65,67,66,72,75,70,71 %N A129608 Signature-permutation of a Catalan automorphism: swap the two rightmost subtrees of general trees. %C A129608 This self-inverse automorphism is obtained as either SPINE(*A129607) or ENIPS(*A129607). See the definitions given in A122203 and A122204. %H A129608 A. Karttunen, <a href="/A129608/b129608.txt">Table of n, a(n) for n = 0..2055</a> %H A129608 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A129608 A129608. a(n) = A057508(A072796(A057508(n))) = A057164(A072796(A057164(n))). Row 3608 of A122203 and A122204. %K A129608 nonn %O A129608 0,3 %A A129608 _Antti Karttunen_, May 22 2007